diff --git a/build/builder/commands/build.py b/build/builder/commands/build.py
index 6790715dd635b79f6185e4b6cc6623e76a2153df..9ff37a359103c9ba1f47730b43cf69726b96180d 100755
--- a/build/builder/commands/build.py
+++ b/build/builder/commands/build.py
@@ -24,10 +24,12 @@ class Builder:
         self.args = args
 
         self.project_dir = args.project_dir
-        os_name = "linux"
-        arch = "x64"
-        if args.target_cpu == "auto":
-            arch, os_name = get_machine_info()
+        arch, os_name = get_machine_info()
+        if args.target_cpu != "auto":
+            if arch != args.target_cpu:
+                exit("current mechine is not " + args.target_cpu + " don't use -t " + args.target_cpu)
+            if os_name != "linux":
+                exit("this build system is only support linux")
         self.build_output_dir = os.path.join(args.project_dir, "out", args.build_type.title(), arch)
         self._build_tools_dir = os.path.join(args.project_dir, "prebuilts", "build-tools", os_name+"-"+arch, "bin")
         self.gn_path = os.path.join(self._build_tools_dir, "gn")
diff --git a/build/builder/common/prebuild.py b/build/builder/common/prebuild.py
index 92db12499b0ae7c7d32b74195c6eb2cae7dbc21b..9fb9ac76c944970424f28d28a8c4b6f965826194 100755
--- a/build/builder/common/prebuild.py
+++ b/build/builder/common/prebuild.py
@@ -16,9 +16,9 @@ def get_machine_info():
 def build_deps(output_dir):
     arch, os_name = get_machine_info()
     copy_path = "prebuilts/build-tools/" + os_name + "-" + arch + "/bin/"
-    abs_copy_path = os.path.join(output_dir, "../../", copy_path)
-    ninja_path = os.path.abspath(os.path.join(abs_copy_path, "ninja"))
-    gn_path = os.path.abspath(os.path.join(abs_copy_path, "gn"))
+    abs_copy_path = os.path.abspath(os.path.join(output_dir, "../../", copy_path))
+    ninja_path = os.path.join(abs_copy_path, "ninja")
+    gn_path = os.path.join(abs_copy_path, "gn")
     if os.path.exists(ninja_path) and os.path.exists(gn_path):
         return
 
@@ -54,7 +54,7 @@ def build_deps(output_dir):
         os.makedirs(os.path.join(gn_dir, 'out'))
         exec_sys_command(['cp', 'last_commit_position.h', 'out/'])
         exec_sys_command(['python3', 'build/gen.py', '--no-last-commit-position', '--no-static-libstdc++'])
-        exec_sys_command([os.path.join(ninja_dir, "ninja-1.10.2", "ninja"), '-C', 'out'])
+        exec_sys_command([os.path.join(ninja_dir, "ninja-1.10.2", "ninja"), 'gn', '-C', 'out'])
         os.chdir(os.path.join(gn_dir, "out"))
         if os.path.exists("gn"):
             exec_sys_command(['cp', 'gn', gn_path])